SBR a Calvary Arms plastic lower/buttstock?

[winmdl98]

Has anyone ever SBR'd a Calvary Arms plastic lower/buttstock?

I bagged one of the Noveske 10.5" .300 Fireball barrels a week ago. I thought about doing a Form 1 for an SBR on the plastic lower and another Form 1 on a titanium 9mm suppressor for it.

My concern is engraving the plastic lower, any challenges with that?

Does NFA require it to be metal?

Any thoughts please.

[MrM4]

Theres no reason that you couldnt register the plastic lower, like all NFA items you would need to put your Name City and State 1/8 tall 3 thousands deep into it as you are the manufacture of the SBR.